<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>登录</title>
    <script src="../js/jquery-2.0.0.min.js" type="text/javascript"></script>
    <script>
        function login() {
            var user = {username:$("#username").val(),
                password:$("#password").val()};
            $.ajax({
                url:"login",
                type:"post",
                data:user,
                dataType:"json",
                success:function (result) {
                    if(result.meta.status===200) {
                        location.href = "index.html";
                    }
                    if(result.meta.status===400) {
                        $("#error").html(result.meta.msg)
                    }
                }
            });
        }
    </script>
    <style>
        body {
            background: url('https://cdn.pixabay.com/photo/2018/08/14/13/23/ocean-3605547_1280.jpg') no-repeat;
            background-size: 100% 130%;
        }

        #login_box {
            width: 20%;
            height: 400px;
            background-color: #00000060;
            margin: auto;
            margin-top: 10%;
            text-align: center;
            border-radius: 10px;
            padding: 50px 50px;
        }

        h2 {
            color: #ffffff90;
            margin-top: 5%;
        }

        #input-box {
            margin-top: 5%;
        }

        span {
            color: #fff;
        }

        input {
            border: 0;
            width: 60%;
            font-size: 15px;
            color: #fff;
            background: transparent;
            border-bottom: 2px solid #fff;
            padding: 5px 10px;
            outline: none;
            margin-top: 10px;
        }

        button {
            margin-top: 50px;
            width: 60%;
            height: 30px;
            border-radius: 10px;
            border: 0;
            color: #fff;
            text-align: center;
            line-height: 30px;
            font-size: 15px;
            background-image: linear-gradient(to right, #30cfd0, #330867);
        }

        #sign_up {
            margin-top: 45%;
            margin-left: 60%;
        }

        a {
            color: #b94648;
        }

        #error{
            color: red;
        }

    </style>
</head>

<body>
<div id="login_box">
    <h2>登录</h2>
    <div id="input_box">
        <input type="text" placeholder="请输入用户名" id="username">
    </div>
    <div class="input_box">
        <input type="password" placeholder="请输入密码" id="password">
    </div>
    <div id="error"></div>
    <button onclick="login()">登录</button><br>
</div>
</body>
</html>
